JPS59166757A - Boat-shaped locker arm device - Google Patents

Boat-shaped locker arm device

Info

Publication number
JPS59166757A
JPS59166757A JP59038889A JP3888984A JPS59166757A JP S59166757 A JPS59166757 A JP S59166757A JP 59038889 A JP59038889 A JP 59038889A JP 3888984 A JP3888984 A JP 3888984A JP S59166757 A JPS59166757 A JP S59166757A
Authority
JP
Japan
Prior art keywords
rocker arm
pedestal
boat
arm device
radius
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP59038889A
Other languages
Japanese (ja)
Other versions
JPH0438943B2 (en
Inventor
ラマンラル・エル・ペ−テル
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TOREDO SUTANPINGU ANDO Manufacturing CO
Original Assignee
TOREDO SUTANPINGU ANDO Manufacturing CO
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by TOREDO SUTANPINGU ANDO Manufacturing CO filed Critical TOREDO SUTANPINGU ANDO Manufacturing CO
Publication of JPS59166757A publication Critical patent/JPS59166757A/en
Publication of JPH0438943B2 publication Critical patent/JPH0438943B2/ja
Granted legal-status Critical Current

Links

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01LCYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12Transmitting gear between valve drive and valve
    • F01L1/18Rocking arms or levers
    • F01L1/181Centre pivot rocking arms
    • F01L1/182Centre pivot rocking arms the rocking arm being pivoted about an individual fulcrum, i.e. not about a common shaft
    • F01L1/183Centre pivot rocking arms the rocking arm being pivoted about an individual fulcrum, i.e. not about a common shaft of the boat type

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Pivots And Pivotal Connections (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 るものである。[Detailed description of the invention] It is something that

舟形ロッカアーム装置は、画業技術分野において、例え
ば米国特許第3,614,943号及び第3,667,
434号として公知である。従来公知の装置では、月形
ロッカアームは台座上に装架され、台座の支点に摺動接
触するようになっている。
Boat-shaped rocker arm devices are known in the art field, for example, in U.S. Pat.
It is known as No. 434. In previously known devices, the moon-shaped rocker arm is mounted on a pedestal and is in sliding contact with the fulcrum of the pedestal.

本発明は、ロッカアームがこれを装架する台座の支点に
対してころがシ運動をするようにした舟形ロッカアーム
装置を提案している。このころがシ運動はロッカアーム
と支点との摩擦を低減させ、摩耗を減少させることがで
きると共に、このロッカアーム装置が採用されるエンジ
ンの燃費を向上させることができる。
The present invention proposes a boat-shaped rocker arm device in which a rocker arm makes roller motion relative to a fulcrum of a pedestal on which the rocker arm is mounted. This rolling motion can reduce friction between the rocker arm and the fulcrum, reducing wear, and can also improve the fuel efficiency of the engine in which this rocker arm device is employed.

本発明による新規々ロツカアーム装置では、ロッカアー
ムは、中央に位置して矩形の開口を具えた全体的に半円
筒形の中間凹面を有している。この開口は、下方且つ内
方に向かってテーパ状をなす平行な横方向端縁な有して
いる。新規なロッカアーム装置の支持台座は、ロッカア
ームの中間凹面の半径よりも小さい半径を有する全体的
に半円筒形の下面を具えた支点又は頭部を有している。
In a novel rocker arm device according to the present invention, the rocker arm has a generally semi-cylindrical intermediate concave surface with a centrally located rectangular opening. The opening has parallel lateral edges that taper downwardly and inwardly. The support pedestal of the novel rocker arm device has a fulcrum or head with a generally semi-cylindrical lower surface having a radius smaller than the radius of the intermediate concave surface of the rocker arm.

支持台座はロッカアームの矩形の開口を貫通する軸部を
有しておシ、軸部を横切る距離は開口の横方向端縁間の
距離よりも僅かに小さい。台座とロッカアームの開口・
どの協働によシ、台座上でのロッカアームの長手方向の
移動が限定される。好ましくは、矩形の開口内に配置さ
れる台座の軸部の部分は開口のテーパ状の端縁に隣接し
て湾曲面を有していて、台座と開口との間の間隙を更に
減少させることができる。
The support pedestal has a shaft extending through a rectangular opening in the rocker arm, the distance across the shaft being slightly less than the distance between the lateral edges of the opening. Opening of pedestal and rocker arm
Any cooperation limits the longitudinal movement of the rocker arm on the pedestal. Preferably, the portion of the pedestal shaft disposed within the rectangular opening has a curved surface adjacent to the tapered edge of the aperture to further reduce the gap between the pedestal and the opening. Can be done.

従って、本発明の主たる目的は、作動中の摩擦を低減で
きるように構成されている舟形ロッカアーム装置を提供
することにある。
SUMMARY OF THE INVENTION Accordingly, it is a primary object of the present invention to provide a boat-shaped rocker arm device that is constructed to reduce friction during operation.

+,一 本発明の他の目的は、支持台座の支点が同支点に接触す
るロッカアームの中間部分の半径よシも小さい半径を有
するように構成されている舟形ロッカアーム装置を提供
することにある。
Another object of the present invention is to provide a boat-shaped rocker arm device in which the fulcrum of the support base has a smaller radius than the radius of the intermediate portion of the rocker arm that contacts the fulcrum.

本発明の更なる目的は、ロッカアームがその中間部分に
下方且つ内方に向かってテーパ状をなす横方向端縁を具
えた矩形の開口を有するように構成されている舟形ロッ
カアーム装置を提供することにある。
A further object of the present invention is to provide a boat-shaped rocker arm device in which the rocker arm is configured to have a rectangular opening in its intermediate portion with lateral edges that taper downwardly and inwardly. It is in.

本発明の更に他の目的は、ロッカアームが下方且つ内方
に向かってテーパ状をなす横方向端縁を具えた矩形の開
口を有すると共に、支持台座が開口の横方向端縁に隣接
して位置される対向する湾曲面を具えた軸部を有するよ
うに構成されている舟形ロッカアーム装置を提供するこ
とにある。
Still another object of the invention is that the rocker arm has a rectangular opening with a lateral edge tapering downwardly and inwardly, and the support pedestal is located adjacent the lateral edge of the opening. An object of the present invention is to provide a boat-shaped rocker arm device configured to have a shaft portion with opposing curved surfaces.

以下、本発明の一実施例について添付図面を参照して詳
細に説明する。
Hereinafter, one embodiment of the present invention will be described in detail with reference to the accompanying drawings.

第1図において、本発明による舟形ロッカアーム装置が
符号10で示されており、支持台座14上に装架された
舟形ロッカアームJ2を有している。適宜のねじ付締着
部材16が台座14を貫通して延び、ロッカアーム装置
をエンジンのブロック18に装着する。周知のように、
ロッカアーム12の一端部はプッシュロッド20の上方
端部に係合し、ロッカアームの他端部は弁ステム22の
上方端部に係合する。
In FIG. 1, a boat-shaped rocker arm arrangement according to the present invention is indicated at 10 and includes a boat-shaped rocker arm J2 mounted on a support pedestal 14. A suitable threaded fastener 16 extends through the seat 14 to attach the rocker arm arrangement to the block 18 of the engine. As is well known,
One end of the rocker arm 12 engages the upper end of the push rod 20 and the other end of the rocker arm engages the upper end of the valve stem 22.

第2図において、ロッカアーム12はプッシュロッド2
0の上方端部を受容する凹所24を有し、凹所24には
これとロッカアームの内部空間とに連通ずる潤滑用穴2
6が設けられている。ロッカアーム12の他端部は弁ス
テム22の上方端部に係合する凸面28を有している。
In FIG. 2, the rocker arm 12 is connected to the push rod 2.
0, the recess 24 has a lubrication hole 2 communicating with the inner space of the rocker arm.
6 is provided. The other end of rocker arm 12 has a convex surface 28 that engages the upper end of valve stem 22.

ロッカアーム12の中間部分は、図示のように、全体的
に半円筒形の中間凹面30を有している。第3図及び第
4図にも示されているように、凹面30は中央に位置さ
れた矩形の開口32を有し、この開口は長手方向に延び
た長い側方端縁34と短かい横方向端縁36とを有して
bる。第5図及び第6図に最も良く示されているように
、横方向端縁36は下方且つ内方に向かってテーパ状を
なしておシ、とのテーパ角度は、ロッカアーム]2が作
動中に揺動する度合により決才る。ロッカアーム12が
中央位置にある状態でのテーパ状の端縁36と台座14
の軸線との間の開先角度は3°〜工5°、好寸しくは4
°〜8°である。
The intermediate portion of rocker arm 12 has a generally semi-cylindrical intermediate concave surface 30 as shown. As also shown in FIGS. 3 and 4, the concave surface 30 has a centrally located rectangular opening 32 with long longitudinally extending lateral edges 34 and short lateral edges 34. It has a directional edge 36. As best shown in FIGS. 5 and 6, the lateral edge 36 tapers downwardly and inwardly, and the angle of taper is such that the angle of the taper is such that the rocker arm 2 is in operation. It depends on the degree of oscillation. Tapered edge 36 and base 14 with rocker arm 12 in the center position
The bevel angle between the axis and the axis is 3° to 5°, preferably 4°
It is between 8° and 8°.

本発明によると、支持台座14は基本的に支点又は頭部
38と軸部40とから成っている。支点38は軸部40
の両側を越えて横方向に延び、全体的に半円筒形をなす
ように下方に向かって突出している湾曲した下面42を
有しており、この下面はロッカアーム12の凹面300
半径よりも小さい所定の半径を有している。支点の下面
42の半径はロッカアームの凹面300半径よシも15
%〜35係小さいことが望ましい。例えば、成るロッカ
アーム装置では、面30の半径は15.24 mm(0
,600インチ)であり、面42の半径は12.07榊
(0,475インチ)である。ロッカアーム12の中間
部分の面30は無限の半径を有するように平らにするこ
とさえ可能である。しかし、実際には、面30を極めて
精密な平面度に保つことは困難であり、又ロッカアーム
12は作動中掘じれる傾向にある。更に、面42と30
間での実質的に線接触による接触面積は狭くもあシ、大
きい摩耗を生ずる可能性がある。それ故、面30の半径
は無限よシ小さい方が良い。
According to the invention, the support seat 14 essentially consists of a fulcrum or head 38 and a shaft 40. The fulcrum 38 is the shaft portion 40
The rocker arm 12 has a curved lower surface 42 extending laterally beyond both sides of the rocker arm 12 and projecting downwardly in a generally semi-cylindrical shape.
has a predetermined radius smaller than the radius. The radius of the lower surface 42 of the fulcrum is 15 times larger than the 300 radius of the concave surface of the rocker arm.
It is desirable that it is smaller by 35% to 35%. For example, in a rocker arm arrangement consisting of a surface 30 having a radius of 15.24 mm (0
, 600 inches), and the radius of surface 42 is 12.07 inches (0,475 inches). The surface 30 of the middle portion of the rocker arm 12 can even be flat to have an infinite radius. However, in practice, it is difficult to maintain very precise flatness of surface 30, and rocker arm 12 tends to dig during operation. Additionally, surfaces 42 and 30
Although the contact area between the two is narrow, it can cause significant wear. Therefore, it is better that the radius of the surface 30 is smaller than infinity.

台座14の軸部40は開口32と同様の矩形の断面を有
する。軸部40は広幅の側面44を有し、両側面44間
の距離は開口32の長手方向の側方端縁34間の距離、
よりも僅かに小さい。軸部40は又狭幅の横方向面46
を有し、両横方向面間の距離は開口32の横方向端縁3
6間の距離よりも僅かに小さい。
The shaft portion 40 of the base 14 has a rectangular cross section similar to the opening 32. The shaft portion 40 has wide side surfaces 44, and the distance between the two side surfaces 44 is the distance between the longitudinal side edges 34 of the opening 32;
slightly smaller than The shaft 40 also has a narrow lateral surface 46.
, and the distance between the two lateral surfaces is the lateral edge 3 of the opening 32.
It is slightly smaller than the distance between 6 and 6.

支点38に隣接して開口32を貫通している軸部40の
横方向面46の上方部分は外方に突出し、て湾曲面48
を形成し、この湾曲面は図示のように支点38の横方向
面に連続している。両筒曲面48は、開口32のテーパ
状の端縁36に嵌合して同端縁ところがシ接触するよう
に僅かに間隔を離されて層る。このようにして、ロッカ
アーム装置10の作動中台座14に対する舟形ロッカア
ーム12の長手方向の移動が実質的に阻止されている。
The upper portion of the lateral surface 46 of the shaft 40 that extends through the opening 32 adjacent to the fulcrum 38 projects outwardly and has a curved surface 48.
, and this curved surface is continuous with the lateral plane of the fulcrum 38 as shown. Both cylindrical curved surfaces 48 fit into the tapered end edge 36 of the opening 32 and are spaced slightly apart from each other so that the end edges are in contact with each other. In this way, longitudinal movement of the rocker boat arm 12 relative to the base 14 during operation of the rocker arm arrangement 10 is substantially prevented.

第5図及び第6図に示されているように、軸部40はロ
ッカアーム12の最端角位置で開口32の横方向端縁3
6に当接して、ロッカアームの角運動を限定する。軸部
の各湾曲面48の半径中心は、軸部40の上方で且つ支
点38の側面形状領域内に位置している。
As shown in FIGS. 5 and 6, the shaft 40 is located at the lateral edge 3 of the opening 32 at the extreme angular position of the rocker arm 12.
6 to limit the angular movement of the rocker arm. The radial center of each curved surface 48 of the shaft portion is located above the shaft portion 40 and within the side shape region of the fulcrum 38 .

ロッカアーム12に対する台座14の横方向の移動を阻
止するため、支点38の側面は、ロッカアーム12の側
面に形成されている内側に延びた浅い突出部52と協働
する浅い突出部50を有している。ロッカアームの突出
部52は、ロッカアームの側面の外側に浅い窪み54を
成形する圧印加工によって形成されることが望捷しい。
To prevent lateral movement of the pedestal 14 relative to the rocker arm 12, the side surface of the fulcrum 38 has a shallow protrusion 50 that cooperates with an inwardly extending shallow protrusion 52 formed on the side surface of the rocker arm 12. There is. The rocker arm protrusion 52 is preferably formed by a coining process that forms a shallow depression 54 on the outside of the side surface of the rocker arm.

突出部520面は互いに略平行であシ、ロッカアーム1
2の側面の上方部分は、ロッカアーム及び台座の組付け
を容易にするために外方に向かつてテーパ状を々してい
る。
The surfaces of the protrusions 520 are substantially parallel to each other, and the rocker arm 1
The upper portions of the two sides are tapered outwardly to facilitate assembly of the rocker arm and pedestal.

本発明は上述した実施例にのみ限定されるものではなく
、画業技術者には本発明の範囲を逸脱することなく幾多
の変更、修正を加え実施し得ることが理解できよう。
The present invention is not limited to the embodiments described above, and those skilled in the art will appreciate that numerous changes and modifications may be made without departing from the scope of the present invention.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明によるロッカアーム装置をエンジンに組
付けた状態で示す概略正面図、第2図は第1図のロッカ
アーム装置の縦断面図、第3図はロッカアームの平面図
、第4図はロッカアーム装置の横断面図、第5図及び第
6図はロッカアームと台座を両最端角1位置で夫々示す
部分的断面図である。 10・・舟形ロッカアーム装置、12・・矩形ロッカア
ーム、14・・支持台座、16・・ねじ付締着部材、3
0・・中間凹面、32・・矩形の開口、36・・横方向
端縁、38・・支点、40・・軸部、42・・下面、4
8・・湾曲面。
FIG. 1 is a schematic front view showing a rocker arm device according to the present invention assembled to an engine, FIG. 2 is a longitudinal sectional view of the rocker arm device of FIG. 1, FIG. 3 is a plan view of the rocker arm, and FIG. The cross-sectional views of the rocker arm device, FIGS. 5 and 6, are partial cross-sectional views showing the rocker arm and the pedestal at one position at both extreme ends, respectively. 10... Boat-shaped rocker arm device, 12... Rectangular rocker arm, 14... Support pedestal, 16... Screwed fastening member, 3
0...Intermediate concave surface, 32...Rectangular opening, 36...Lateral edge, 38...Fully point, 40...Shaft portion, 42...Bottom surface, 4
8...Curved surface.

Claims (1)

【特許請求の範囲】 1、 軸部及び上記軸部の両側から外方に延び所定の半
径の湾曲した下面を具えた支点を有する台座と、上記支
点の下面の半径よシも太きる舟形ロッカアームとを備え
、上記ロッカアームがその中間部分に中央に位置して、
上記台座の軸部が貫通する矩形の開口を有し、上記矩形
の開口が下方且つ内方に向かってテーパ状をなす横方向
端縁を有し、上記台座が上記矩形の開口を貫通する部分
に、対向する湾曲面を有しており、上記台座の対向する
湾曲間の距離が上記開口の横方向端縁間の距離よシも僅
かに小さくなっていて、上記矩形の開口と上記台座との
協働によシ同台座に対する上記ロッカアームの長手方向
の移動が実質的に阻止されていることを特徴とする舟形
ロッカアーム装置。 2、 上記テーパ状の横方向端縁と上記台座の軸線との
間の開先角度が3°〜15°であることを特徴とする特
許請求の範囲第1項記載の舟形ロッカアーム装置。 3、 上記テーパ状の横方向端縁と上記台座の軸線との
間の開先角度が4°〜8°であることを特徴とする特許
請求の範囲第2項記載の舟形ロッカアーム装置。 4、上記支点の下面の半径が上記中間凹面の半径よシも
151%〜35%小さいことを特徴とする特許請求の範
囲第1項記載の舟形ロッカアーム装置。 5、 上記中間凹面の半径が無限よシも小さいことを特
徴とする特許請求の範囲第1項記載の舟形ロッカアーム
装置。 6、 上記矩形の開口の横方向端縁が同開口の長手方向
端縁よシも短かいことを特徴とする特許請求の範囲第1
項記載の舟形コツ力アーム装置。 7. 上記台座の湾曲面が上記ロッカアームの揺動中上
記矩形の開口の横方向端縁に実質的にころが9接触する
ことを特徴とする特許請求の範囲第1項記載の舟形ロッ
カアーム装置。
[Scope of Claims] 1. A pedestal having a shaft portion and a fulcrum that extends outward from both sides of the shaft portion and has a curved lower surface with a predetermined radius, and a boat-shaped rocker arm that is thicker than the radius of the lower surface of the fulcrum. and the rocker arm is centrally located in an intermediate portion thereof,
A portion of the pedestal having a rectangular opening through which the shaft portion of the pedestal passes, the rectangular opening having a lateral edge that tapers downward and inward, and the pedestal passing through the rectangular opening. The rectangular opening and the pedestal have opposing curved surfaces, and the distance between the opposing curves of the pedestal is slightly smaller than the distance between the lateral edges of the opening. A boat-shaped rocker arm device characterized in that movement of the rocker arm in the longitudinal direction with respect to the pedestal is substantially prevented by cooperation of the above. 2. The boat-shaped rocker arm device according to claim 1, wherein a bevel angle between the tapered lateral edge and the axis of the pedestal is 3° to 15°. 3. The boat-shaped rocker arm device according to claim 2, wherein a bevel angle between the tapered lateral edge and the axis of the pedestal is 4° to 8°. 4. The boat-shaped rocker arm device according to claim 1, wherein the radius of the lower surface of the fulcrum is 151% to 35% smaller than the radius of the intermediate concave surface. 5. The boat-shaped rocker arm device according to claim 1, wherein the radius of the intermediate concave surface is even smaller than infinity. 6. Claim 1, wherein the lateral edge of the rectangular opening is shorter than the longitudinal edge of the opening.
The boat-shaped force arm device described in Section 1. 7. 2. The boat-shaped rocker arm device according to claim 1, wherein the curved surface of the pedestal substantially contacts the lateral edge of the rectangular opening during rocking of the rocker arm.
JP59038889A 1983-03-03 1984-03-02 Boat-shaped locker arm device Granted JPS59166757A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/471,756 US4799464A (en) 1983-03-03 1983-03-03 Boat-type rocker arm assembly
US471756 1983-03-03

Publications (2)

Publication Number Publication Date
JPS59166757A true JPS59166757A (en) 1984-09-20
JPH0438943B2 JPH0438943B2 (en) 1992-06-26

Family

ID=23872875

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59038889A Granted JPS59166757A (en) 1983-03-03 1984-03-02 Boat-shaped locker arm device

Country Status (5)

Country Link
US (1) US4799464A (en)
EP (1) EP0118360B1 (en)
JP (1) JPS59166757A (en)
CA (1) CA1251702A (en)
DE (1) DE3463814D1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0275708A (en) * 1988-09-06 1990-03-15 Henley Mfg Corp Boat type locker arm assembly
US7836860B2 (en) 2007-11-21 2010-11-23 Charter Manufacturing Co., Inc. Engine rocker arm

Families Citing this family (11)

* Cited by examiner, † Cited by third party
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US7836860B2 (en) 2007-11-21 2010-11-23 Charter Manufacturing Co., Inc. Engine rocker arm

Also Published As

Publication number Publication date
EP0118360A1 (en) 1984-09-12
JPH0438943B2 (en) 1992-06-26
EP0118360B1 (en) 1987-05-20
CA1251702A (en) 1989-03-28
US4799464A (en) 1989-01-24
DE3463814D1 (en) 1987-06-25

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